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(svn r25261) -Add: abstract implementation of linkgraph overlay for GUI (fonsinchen)

This commit is contained in:
rubidium 2013-05-19 14:30:40 +00:00
parent be4f85766c
commit 5bca50c466
7 changed files with 421 additions and 0 deletions
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3
projects/openttd_vs100.vcxproj
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@ -471,6 +471,8 @@
<ClInclude Include="..\src\landscape_type.h" />
<ClInclude Include="..\src\language.h" />
<ClInclude Include="..\src\linkgraph\linkgraph.h" />
<ClInclude Include="..\src\linkgraph\linkgraph_base.h" />
<ClInclude Include="..\src\linkgraph\linkgraph_gui.h" />
<ClInclude Include="..\src\linkgraph\linkgraph_type.h" />
<ClInclude Include="..\src\livery.h" />
<ClInclude Include="..\src\map_func.h" />
@ -678,6 +680,7 @@
<ClCompile Include="..\src\highscore_gui.cpp" />
<ClCompile Include="..\src\industry_gui.cpp" />
<ClCompile Include="..\src\intro_gui.cpp" />
<ClCompile Include="..\src\linkgraph\linkgraph_gui.cpp" />
<ClCompile Include="..\src\main_gui.cpp" />
<ClCompile Include="..\src\misc_gui.cpp" />
<ClCompile Include="..\src\music_gui.cpp" />

9
projects/openttd_vs100.vcxproj.filters
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@ -642,6 +642,12 @@
<ClInclude Include="..\src\linkgraph\linkgraph.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="..\src\linkgraph\linkgraph_base.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="..\src\linkgraph\linkgraph_gui.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="..\src\linkgraph\linkgraph_type.h">
<Filter>Header Files</Filter>
</ClInclude>
@ -1263,6 +1269,9 @@
<ClCompile Include="..\src\intro_gui.cpp">
<Filter>GUI Source Code</Filter>
</ClCompile>
<ClCompile Include="..\src\linkgraph\linkgraph_gui.cpp">
<Filter>GUI Source Code</Filter>
</ClCompile>
<ClCompile Include="..\src\main_gui.cpp">
<Filter>GUI Source Code</Filter>
</ClCompile>

12
projects/openttd_vs80.vcproj
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@ -1158,6 +1158,14 @@
RelativePath=".\..\src\linkgraph\linkgraph.h"
>
</File>
<File
RelativePath=".\..\src\linkgraph\linkgraph_base.h"
>
</File>
<File
RelativePath=".\..\src\linkgraph\linkgraph_gui.h"
>
</File>
<File
RelativePath=".\..\src\linkgraph\linkgraph_type.h"
>
@ -1994,6 +2002,10 @@
RelativePath=".\..\src\intro_gui.cpp"
>
</File>
<File
RelativePath=".\..\src\linkgraph\linkgraph_gui.cpp"
>
</File>
<File
RelativePath=".\..\src\main_gui.cpp"
>

12
projects/openttd_vs90.vcproj
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@ -1155,6 +1155,14 @@
RelativePath=".\..\src\linkgraph\linkgraph.h"
>
</File>
<File
RelativePath=".\..\src\linkgraph\linkgraph_base.h"
>
</File>
<File
RelativePath=".\..\src\linkgraph\linkgraph_gui.h"
>
</File>
<File
RelativePath=".\..\src\linkgraph\linkgraph_type.h"
>
@ -1991,6 +1999,10 @@
RelativePath=".\..\src\intro_gui.cpp"
>
</File>
<File
RelativePath=".\..\src\linkgraph\linkgraph_gui.cpp"
>
</File>
<File
RelativePath=".\..\src\main_gui.cpp"
>

2
source.list
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@ -205,6 +205,7 @@ landscape_type.h
language.h
linkgraph/linkgraph.h
linkgraph/linkgraph_base.h
linkgraph/linkgraph_gui.h
linkgraph/linkgraph_type.h
livery.h
map_func.h
@ -431,6 +432,7 @@ group_gui.cpp
highscore_gui.cpp
industry_gui.cpp
intro_gui.cpp
linkgraph/linkgraph_gui.cpp
main_gui.cpp
misc_gui.cpp
music_gui.cpp

291
src/linkgraph/linkgraph_gui.cpp Normal file
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@ -0,0 +1,291 @@
/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file linkgraph_gui.cpp Implementation of linkgraph overlay GUI. */
#include "../stdafx.h"
#include "../window_gui.h"
#include "../company_base.h"
#include "../date_func.h"
#include "linkgraph_gui.h"
#include "../viewport_func.h"
/**
* Colours for the various "load" states of links. Ordered from "unused" to
* "overloaded".
*/
const uint8 LinkGraphOverlay::LINK_COLOURS[] = {
0x0f, 0xd1, 0xd0, 0x57,
0x55, 0x53, 0xbf, 0xbd,
0xba, 0xb9, 0xb7, 0xb5
};
/**
* Get a DPI for the widget we will be drawing to.
* @param dpi DrawPixelInfo to fill with the desired dimensions.
*/
void LinkGraphOverlay::GetWidgetDpi(DrawPixelInfo *dpi) const
{
const NWidgetBase *wi = this->window->GetWidget<NWidgetBase>(this->widget_id);
dpi->left = dpi->top = 0;
dpi->width = wi->current_x;
dpi->height = wi->current_y;
}
/**
* Rebuild the cache and recalculate which links and stations to be shown.
*/
void LinkGraphOverlay::RebuildCache()
{
this->cached_links.clear();
this->cached_stations.clear();
if (this->company_mask == 0) return;
DrawPixelInfo dpi;
this->GetWidgetDpi(&dpi);
const Station *sta;
FOR_ALL_STATIONS(sta) {
/* Show links between stations of selected companies or "neutral" ones like oilrigs. */
if (sta->owner != OWNER_NONE && !HasBit(this->company_mask, sta->owner)) continue;
if (sta->rect.IsEmpty()) continue;
Point pta = this->GetStationMiddle(sta);
StationID from = sta->index;
StationLinkMap &seen_links = this->cached_links[from];
uint supply = 0;
CargoID c;
FOR_EACH_SET_CARGO_ID(c, this->cargo_mask) {
if (!CargoSpec::Get(c)->IsValid()) continue;
if (!LinkGraph::IsValidID(sta->goods[c].link_graph)) continue;
const LinkGraph &lg = *LinkGraph::Get(sta->goods[c].link_graph);
ConstNode from_node = lg[sta->goods[c].node];
supply += lg.Monthly(from_node.Supply());
for (ConstEdgeIterator i = from_node.Begin(); i != from_node.End(); ++i) {
StationID to = lg[i->first].Station();
assert(from != to);
if (!Station::IsValidID(to) || seen_links.find(to) != seen_links.end()) {
continue;
}
const Station *stb = Station::Get(to);
assert(sta != stb);
if (stb->owner != OWNER_NONE && !HasBit(this->company_mask, stb->owner)) continue;
if (stb->rect.IsEmpty()) continue;
if (!this->IsLinkVisible(pta, this->GetStationMiddle(stb), &dpi)) continue;
this->AddLinks(sta, stb);
seen_links[to]; // make sure it is created and marked as seen
}
}
if (this->IsPointVisible(pta, &dpi)) {
this->cached_stations.push_back(std::make_pair(from, supply));
}
}
}
/**
* Determine if a certain point is inside the given DPI, with some lee way.
* @param pt Point we are looking for.
* @param dpi Visible area.
* @param padding Extent of the point.
* @return If the point or any of its 'extent' is inside the dpi.
*/
inline bool LinkGraphOverlay::IsPointVisible(Point pt, const DrawPixelInfo *dpi, int padding) const
{
return pt.x > dpi->left - padding && pt.y > dpi->top - padding &&
pt.x < dpi->left + dpi->width + padding &&
pt.y < dpi->top + dpi->height + padding;
}
/**
* Determine if a certain link crosses through the area given by the dpi with some lee way.
* @param pta First end of the link.
* @param ptb Second end of the link.
* @param dpi Visible area.
* @param padding Width or thickness of the link.
* @return If the link or any of its "thickness" is visible. This may return false positives.
*/
inline bool LinkGraphOverlay::IsLinkVisible(Point pta, Point ptb, const DrawPixelInfo *dpi, int padding) const
{
return !((pta.x < dpi->left - padding && ptb.x < dpi->left - padding) ||
(pta.y < dpi->top - padding && ptb.y < dpi->top - padding) ||
(pta.x > dpi->left + dpi->width + padding &&
ptb.x > dpi->left + dpi->width + padding) ||
(pta.y > dpi->top + dpi->height + padding &&
ptb.y > dpi->top + dpi->height + padding));
}
/**
* Add all "interesting" links between the given stations to the cache.
* @param from The source station.
* @param to The destination station.
*/
void LinkGraphOverlay::AddLinks(const Station *from, const Station *to)
{
CargoID c;
FOR_EACH_SET_CARGO_ID(c, this->cargo_mask) {
if (!CargoSpec::Get(c)->IsValid()) continue;
const GoodsEntry &ge = from->goods[c];
if (!LinkGraph::IsValidID(ge.link_graph) ||
ge.link_graph != to->goods[c].link_graph) {
continue;
}
const LinkGraph &lg = *LinkGraph::Get(ge.link_graph);
ConstEdge edge = lg[ge.node][to->goods[c].node];
if (edge.Capacity() > 0) {
this->AddStats(lg.Monthly(edge.Capacity()), lg.Monthly(edge.Usage()),
this->cached_links[from->index][to->index]);
}
}
}
/**
* Add information from a given pair of link stat and flow stat to the given link properties.
* @param orig_link Link stat to read the information from.
* @param new_plan Planned flow for the link.
* @param cargo LinkProperties to write the information to.
*/
/* static */ void LinkGraphOverlay::AddStats(uint new_cap, uint new_usg, LinkProperties &cargo)
{
/* multiply the numbers by 32 in order to avoid comparing to 0 too often. */
if (cargo.capacity == 0 ||
cargo.usage * 32 / (cargo.capacity + 1) < new_usg * 32 / (new_cap + 1)) {
cargo.capacity = new_cap;
cargo.usage = new_usg;
}
}
/**
* Draw the linkgraph overlay or some part of it, in the area given.
* @param dpi Area to be drawn to.
*/
void LinkGraphOverlay::Draw(const DrawPixelInfo *dpi) const
{
this->DrawLinks(dpi);
this->DrawStationDots(dpi);
}
/**
* Draw the cached links or part of them into the given area.
* @param dpi Area to be drawn to.
*/
void LinkGraphOverlay::DrawLinks(const DrawPixelInfo *dpi) const
{
for (LinkMap::const_iterator i(this->cached_links.begin()); i != this->cached_links.end(); ++i) {
if (!Station::IsValidID(i->first)) continue;
Point pta = this->GetStationMiddle(Station::Get(i->first));
for (StationLinkMap::const_iterator j(i->second.begin()); j != i->second.end(); ++j) {
if (!Station::IsValidID(j->first)) continue;
Point ptb = this->GetStationMiddle(Station::Get(j->first));
if (!this->IsLinkVisible(pta, ptb, dpi, this->scale + 2)) continue;
this->DrawContent(pta, ptb, j->second);
}
}
}
/**
* Draw one specific link.
* @param pta Source of the link.
* @param ptb Destination of the link.
* @param cargo Properties of the link.
*/
void LinkGraphOverlay::DrawContent(Point pta, Point ptb, const LinkProperties &cargo) const
{
int offset_y = (pta.x < ptb.x ? 1 : -1) * this->scale;
int offset_x = (pta.y > ptb.y ? 1 : -1) * this->scale;
int colour = LinkGraphOverlay::LINK_COLOURS[cargo.usage * lengthof(LinkGraphOverlay::LINK_COLOURS) / (cargo.capacity * 2 + 2)];
GfxDrawLine(pta.x + offset_x, pta.y, ptb.x + offset_x, ptb.y, colour, scale);
GfxDrawLine(pta.x, pta.y + offset_y, ptb.x, ptb.y + offset_y, colour, scale);
GfxDrawLine(pta.x, pta.y, ptb.x, ptb.y, _colour_gradient[COLOUR_GREY][1], this->scale);
}
/**
* Draw dots for stations into the smallmap. The dots' sizes are determined by the amount of
* cargo produced there, their colours by the type of cargo produced.
*/
void LinkGraphOverlay::DrawStationDots(const DrawPixelInfo *dpi) const
{
for (StationSupplyList::const_iterator i(this->cached_stations.begin()); i != this->cached_stations.end(); ++i) {
const Station *st = Station::GetIfValid(i->first);
if (st == NULL) continue;
Point pt = this->GetStationMiddle(st);
if (!this->IsPointVisible(pt, dpi, 3 * this->scale)) continue;
uint r = this->scale * 2 + this->scale * 2 * min(200, i->second) / 200;
LinkGraphOverlay::DrawVertex(pt.x, pt.y, r,
_colour_gradient[st->owner != OWNER_NONE ?
(Colours)Company::Get(st->owner)->colour : COLOUR_GREY][5],
_colour_gradient[COLOUR_GREY][1]);
}
}
/**
* Draw a square symbolizing a producer of cargo.
* @param x X coordinate of the middle of the vertex.
* @param y Y coordinate of the middle of the vertex.
* @param size Y and y extend of the vertex.
* @param colour Colour with which the vertex will be filled.
* @param border_colour Colour for the border of the vertex.
*/
/* static */ void LinkGraphOverlay::DrawVertex(int x, int y, int size, int colour, int border_colour)
{
size--;
int w1 = size / 2;
int w2 = size / 2 + size % 2;
GfxFillRect(x - w1, y - w1, x + w2, y + w2, colour);
w1++;
w2++;
GfxDrawLine(x - w1, y - w1, x + w2, y - w1, border_colour);
GfxDrawLine(x - w1, y + w2, x + w2, y + w2, border_colour);
GfxDrawLine(x - w1, y - w1, x - w1, y + w2, border_colour);
GfxDrawLine(x + w2, y - w1, x + w2, y + w2, border_colour);
}
/**
* Determine the middle of a station in the current window.
* @param st The station we're looking for.
* @return Middle point of the station in the current window.
*/
Point LinkGraphOverlay::GetStationMiddle(const Station *st) const {
Point dummy;
dummy.x = dummy.y = 0;
return dummy;
}
/**
* Set a new cargo mask and rebuild the cache.
* @param cargo_mask New cargo mask.
*/
void LinkGraphOverlay::SetCargoMask(uint32 cargo_mask)
{
this->cargo_mask = cargo_mask;
this->RebuildCache();
this->window->GetWidget<NWidgetBase>(this->widget_id)->SetDirty(this->window);
}
/**
* Set a new company mask and rebuild the cache.
* @param company_mask New company mask.
*/
void LinkGraphOverlay::SetCompanyMask(uint32 company_mask)
{
this->company_mask = company_mask;
this->RebuildCache();
this->window->GetWidget<NWidgetBase>(this->widget_id)->SetDirty(this->window);
}

92
src/linkgraph/linkgraph_gui.h Normal file
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@ -0,0 +1,92 @@
/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file linkgraph_gui.h Declaration of linkgraph overlay GUI. */
#ifndef LINKGRAPH_GUI_H
#define LINKGRAPH_GUI_H
#include "../company_func.h"
#include "../station_base.h"
#include "../widget_type.h"
#include "linkgraph_base.h"
#include <map>
#include <list>
/**
* Properties of a link between two stations.
*/
struct LinkProperties {
LinkProperties() : capacity(0), usage(0) {}
uint capacity; ///< Capacity of the link.
uint usage; ///< Actual usage of the link.
};
/**
* Handles drawing of links into some window.
* The window must either be a smallmap or have a valid viewport.
*/
class LinkGraphOverlay {
public:
typedef std::map<StationID, LinkProperties> StationLinkMap;
typedef std::map<StationID, StationLinkMap> LinkMap;
typedef std::list<std::pair<StationID, uint> > StationSupplyList;
static const uint8 LINK_COLOURS[];
/**
* Create a link graph overlay for the specified window.
* @param w Window to be drawn into.
* @param wid ID of the widget to draw into.
* @param cargo_mask Bitmask of cargoes to be shown.
* @param company_mask Bitmask of companies to be shown.
* @param scale Desired thickness of lines and size of station dots.
*/
LinkGraphOverlay(const Window *w, uint wid, uint32 cargo_mask = 0xFFFFFFFF,
uint32 company_mask = 1 << _local_company, uint scale = 1) :
window(w), widget_id(wid), cargo_mask(cargo_mask), company_mask(company_mask), scale(scale)
{}
void RebuildCache();
void Draw(const DrawPixelInfo *dpi) const;
void SetCargoMask(uint32 cargo_mask);
void SetCompanyMask(uint32 company_mask);
/** Get a bitmask of the currently shown cargoes. */
uint32 GetCargoMask() { return this->cargo_mask; }
/** Get a bitmask of the currently shown companies. */
uint32 GetCompanyMask() { return this->company_mask; }
protected:
const Window *window; ///< Window to be drawn into.
const uint widget_id; ///< ID of Widget in Window to be drawn to.
uint32 cargo_mask; ///< Bitmask of cargos to be displayed.
uint32 company_mask; ///< Bitmask of companies to be displayed.
LinkMap cached_links; ///< Cache for links to reduce recalculation.
StationSupplyList cached_stations; ///< Cache for stations to be drawn.
uint scale; ///< Width of link lines.
Point GetStationMiddle(const Station *st) const;
void DrawForwBackLinks(Point pta, StationID sta, Point ptb, StationID stb) const;
void AddLinks(const Station *sta, const Station *stb);
void DrawLinks(const DrawPixelInfo *dpi) const;
void DrawStationDots(const DrawPixelInfo *dpi) const;
void DrawContent(Point pta, Point ptb, const LinkProperties &cargo) const;
bool IsLinkVisible(Point pta, Point ptb, const DrawPixelInfo *dpi, int padding = 0) const;
bool IsPointVisible(Point pt, const DrawPixelInfo *dpi, int padding = 0) const;
void GetWidgetDpi(DrawPixelInfo *dpi) const;
static void AddStats(uint new_cap, uint new_usg, LinkProperties &cargo);
static void DrawVertex(int x, int y, int size, int colour, int border_colour);
};
#endif /* LINKGRAPH_GUI_H */